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Absenteeism, Substitutes, and Complements in Simple Games

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Abstract

A voting with absenteeism game is defined as a pair (G;r) where G is an n-player (monotonic) simple game and r is an n-vector for which r_i is the probability that player i attends a vote. We define a power index for such games, called the absentee index. We axiomatize the absentee index and provide a multilinear extension formula for it. Using this analysis we re-derive Myerson's (1977, 1980) ibalanced contributionsi property for the Shapley-Shubik power index. In fact, we derive a formula which quantitatively gives the amount of the ibalanced contributionsi in terms of the coefficients of the multilinear extension of the game. Finally, we define the notion of substitutes and complements in simple games. We compare these concepts with the familiar concepts of dummy player, veto player, and master player.

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  • Thomas Quint & Martin Shubik, 2003. "Absenteeism, Substitutes, and Complements in Simple Games," Cowles Foundation Discussion Papers 1447, Cowles Foundation for Research in Economics, Yale University.
  • Handle: RePEc:cwl:cwldpp:1447
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    Keywords

    Simple game; Shapley-Shubik power index; Absenteeism; Multilinear extension; Balanced contributions; Substitute; Complement;

    JEL classification:

    • C7 - Mathematical and Quantitative Methods - - Game Theory and Bargaining Theory
    • C71 - Mathematical and Quantitative Methods - - Game Theory and Bargaining Theory - - - Cooperative Games
    • D72 - Microeconomics - - Analysis of Collective Decision-Making - - - Political Processes: Rent-seeking, Lobbying, Elections, Legislatures, and Voting Behavior

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